[Gasification] gas quality and engine lifespan?

[David G. LeVine]

At 02:33 PM 7/8/2007, you wrote:
>David,
>
>I don't completely understand "dry" in this context.

His point was with hot (i.e. uncooled) gasses 
with little or no liquid matter in them.

>  With gasoline it implies a fuel stream void of 
> aerosols; intake manifolds are often heated
>with exhaust gas to ensure this condition.

Nope, they are heated to ensure that there is 
enough vapor for smooth running.  Aerosols 
actually improve HP output due to greater density.

>With woodgas I assumed that most lash-ups 
>incorporate some kind of after-cooler to enhance 
>volumetric efficiency. How "hot" is hot? Hotter 
>than the compressed fuel/air mix during
>ignition.

Clearly not.  However in excess of 200ºF is likely.

>I'm wondering if the phenomena that Ken is 
>describing is related more to micro-abrasive particles in the fuel stream(?)

It might be, but it is for him to discuss.


David G. LeVine
Nashua, NH  03060